【Ping of Death】

The ping of death attack, or PoD, can cripple a network based on a flaw in the TCP/IP system. The maximum size for a packet is 65,535 bytes. If one were to send a packet larger than that, the receiving computer would ultimately crash from confusion.

Sending a ping of this size is against the rules of the TCP/IP protocol, but hackers can bypass this by cleverly sending the packets in fragments. When the fragments are assembled on the receiving computer, the overall packet size is too great. This will cause a buffer overlflow and crash the device.

Luckily, most devices created after 1998 are immune to this kind of attack. If you are running a network with outdated devices this will indeed be a possible threat to your network. In this case, upgrade your devices if possible

参考：http://www.ids-sax2.com/articles/PreventDosAttacks.htm

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